- Move the folder/app configuration logic into its own file

src/appconfig.h

@@ -0,0 +1,52 @@
+
+#ifndef APPCONFIG_H
+#define APPCONFIG_H
+#include <QDateTime>
+#include "imagestructs.h"
+
+// configuration options that apply to an image/folder of images
+struct Config {
+  public:
+    unsigned int rotationSeconds = 30;
+    int blurRadius = -1;
+    int backgroundOpacity = -1;
+    ImageDisplayOptions baseDisplayOptions;
+    QDateTime loadTime;
+};
+
+// app level configuration
+struct AppConfig : public Config
+{
+    AppConfig() {}
+    AppConfig( const Config &inConfig ) : Config(inConfig) {}
+    std::string path = "";
+    std::string configPath = "";
+
+    std::string overlay = "";
+    std::string imageList = ""; // comma delimited list of images to show
+
+    bool recursive = false;
+    bool shuffle = false;
+    bool sorted = false;
+    bool debugMode = false;
+    static const std::string valid_aspects; 
+
+  public:
+    bool PathOptionsChanged(AppConfig &other) {
+      if ( other.recursive != recursive || other.shuffle != shuffle
+      || other.sorted != sorted)
+        return true;
+      if ( other.path != path || other.imageList != imageList )
+        return true;
+      return false;
+    }
+};
+
+
+AppConfig loadAppConfiguration(const AppConfig &commandLineConfig);
+Config getConfigurationForFolder(const std::string &folderPath, const Config &currentConfig, bool debugMode);
+
+ImageAspect parseAspectFromString(char aspect);
+QString getAppConfigFilePath(const std::string &configPath);
+
+#endif